參數(shù)資料
型號: LM4854
廠商: National Semiconductor Corporation
元件分類: 運動控制電子
英文描述: 1.9W Monaural, 85mW Stereo Headphone Audio Amplifier
中文描述: 1.9W單聲道,85mW立體聲耳機音頻放大器
文件頁數(shù): 9/29頁
文件大小: 1440K
代理商: LM4854
External Components Description
See
Figure 1
.
Components
1.
Functional Description
R
i
This is the inverting input resistance that, along with R
f
, sets the closed-loop gain. Input resistance R
i
and
input capacitance C
i
form a high pass filter. The filter’s cutoff frequency is f
c
= 1/2
π
R
i
C
i
.
This is the input coupling capacitor. It blocks DC voltage at the amplifier’s inverting input. C
i
and R
i
create a
highpass filter. The filter’s cutoff frequency is f
c
= 1/2
π
R
i
C
i
. Refer to the Application Information section,
SELECTING EXTERNAL COMPONENTS
, for an explanation of determining C
i
’s value.
This is the feedback resistance that, along with R
i
, sets the closed-loop gain.
The supply bypass capacitor. Refer to the
POWER SUPPLY BYPASSING
section for information about
properly placing, and selecting the value of, this capacitor.
This capacitor filters the half-supply voltage present on the BYPASS pin. Refer to the Application
Information section,
SELECTING EXTERNAL COMPONENTS
, for information about properly placing, and
selecting the value of, this capacitor..
2.
C
i
3.
4.
R
f
C
s
5.
C
B
Typical Performance Characteristics
THD+N vs Frequency
THD+N vs Frequency
200382D8
LM4854LD
V
DD
= 5V, R
= 4
(BTL),
P
OUT
= 1000mW
200382D9
LM4854LD
V
DD
= 5V, R
= 4
(BTL),
P
OUT
= 400mW
THD+N vs Frequency
THD+N vs Frequency
200382C0
V
DD
= 5V, R
= 8
(BTL),
P
OUT
= 400mW
200382B8
V
DD
= 5V, R
= 16
(SE),
P
OUT
= 50mW
L
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM4854A E WAF 制造商:Texas Instruments 功能描述:
LM4854IBL 制造商:NSC 制造商全稱:National Semiconductor 功能描述:1.9W Monaural, 85mW Stereo Headphone Audio Amplifier
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LM4854LD 制造商:未知廠家 制造商全稱:未知廠家 功能描述:AUDIO AMPLIFIER|DUAL|LLCC|14PIN|CERAMIC
LM4854LD/NOPB 功能描述:IC AMP AUDIO PWR 2.3W MONO 14LLP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:Boomer® 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機,2-通道(立體聲) 在某負載時最大輸出功率 x 通道數(shù)量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點:I²C,麥克風,靜音,短路保護,音量控制 安裝類型:表面貼裝 供應(yīng)商設(shè)備封裝:25-WLP(2.09x2.09) 封裝/外殼:25-WFBGA,WLCSP 包裝:帶卷 (TR)